Double-acting spring-hinge.



2 SHEETS-SHEET 1,

Patented Oct. 20, 1908.-

M. A. ERICKSON. DOUBLE ACTING SPRING HINGE. APPLICATION FILED 1320.19, 1907.

M. A. ERICKSON. DOUBLE ACTING SPRING HINGE.

APPLICATION FILED DEG.19, 1907.

Patented Oct. 20, 1908.

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AUNITED sTATnsgngTnNT onnion.

l MARCUS A. ERICKSON, OF MINNEAPOLIS, MINNESOTA.

DOUBLE-ACTING SPRING-HINGE.

Speciation of Letters Patent.

Patented Oct. 20, 1908.

' Application led December19, 1907. Serial No. 407,108.

.adapted to swing both ways.

The object of my invention is to provide means for holding the door in an openp'osition when swung in either direction.

'A further object is to provide means whereby any further movement of the door after passing the normal stopping point will be cushioned by the spring, thus rendering door stops unnecessar A still furtherobjaect is to provide va double acting hinge which while holding the door in an open position, will when the door is pushed beyond such position and re7 leased, allow it to close, lthus permitting the person passing through the door tojcause it to stay open or closed as desired.

Myinvention consists generally in various constructions and combinations, 4all as hereinafter described and particularly pointed out` in the claims. A

In the accompanying drawings, forming part of this specification, Figure l isfa des'V tail view partially in section illustrating the z rpplication of my invention lto a double swing door. Figp2 is an edge view of the same. Fig. 3 is a sectional View on the line- 'of Fig.l 2 looking in the direction of the arrow. Fig.. i is asimilar on the line :ca-xa of vFig r 1, 'also looking' the y s a sectional 1. Fig. 61s

direction of .the arrowj Fig. view on theline 15b-Al oil?, a sectional view on Vthe ,line

Fig. .7 is a sectional view on the line .awa of Fig. 1. Fig. vislafcletail sectional View showing the door in ,its open position. Fig.

9 illustrates the position of the parts when the dooris swung upast its normal open' posil tion', and the axis of the door hinge'plate is transferred from one pivot to another. Fig..

1-0 is a detail view illustrating a modifiedconstruction. 'Fi 11 isa sectional viewl on vthe line y--yo Fig. 10. Fig. 12 is a sectional view on `the line .oca-sof Fig. 10.

Fig. 13 isa's'ectional View on the line 2*-25" ing.. Afr

, 1/ y of Fig, 1.

trating the o en position of the door. F ig. 15V correspon-sto Fig. 9 and illustratesthe change of the pivot of the door hingepla-te from one centerto another when'it is swung 'past the normal stopping point.

Vinolose .the said ball bearing and is located between the box :and the .base plate. `The` lower edge. of the door is mortised toreceive themboX 8 in which the mechanism of the double acting yspring hinge is arranged. This box may be made in various ways and I do not wis-h to conne myself to the particular construction illustratodherein. A

disk9 has a plain -round` shank 10 arranged y to project through an opening in the plate 7 and is provided with a shoulder 10 -to engage the base plate 5. Below this shoulder the shank is diamond-shaped in cross section, thoughY it may besquareor polygonal, if preferredwand enters into a correspondingly shaped opening in the plate 5, .and is provided with a nut 11 by means of which' the disk :9 and the base plate may be securely` clamped together.

Upon the :disk 9, pins 12 and 12* are' mounted, 'said pins being substantially square in cross section 'and fitting within' an opening 13 in a plate 14 which has irregw. lareamshaped edges around the said -o'peny ejection 15- formed on sai-d plate extends tween the pins in their normal position when' the' door yis closed, and ne- `cesses 16 .and 17. are formed in tlieplate at one side of the opening with a projection 18 between them, and similar recesses 16a and 17a with .a projection 18 are provided on .thelopposite side of the opening. The late 14 is provided with .a shank 19 fitting within one end of .a coiled spring 20 whose opposite end 'is securedto a stud 21. Al plate is secured to the plate 7 and 'box 8, .and has a hole 22V in which :the stud 21 sli/des. The stud 21 has an .adjusting nut 23l by means of' which the' tension ofthe spring may be rogalated and its pressure on the eamplate and the pins controlled.

so y.

In Eig. S the device is illustrated with the parts in the position assumed when the door is open or swung toa point-a little beyond a right angle to the normal or closed position of the door, In this position the tension of the spring will be applied to draw the cam plate against the pins and hold the door in an open position oi' at a point slightly beyond the center. A slight pressure will be sulicieiit to overcome the tension of the spiing and allow the door to close, but until such pressure is applied the door will remain open without the use of a wedge or any other securing means.

In Fig.` v9 the hinge is illustrated in the position assumed when the door is pushed still further open, lin which case the camv of the pins.

plate will cease to swing on the pin 12a as a center and its axis will be transferred to the pin 12 and the leverage on the spring will be'increased anditwill act as a cushion to resist the further opening movement of the door, and dispense with the use of astop `generally employed to prev-ent a door from striking 'the wall or casing, the cushion action of this spring oiering a gradually increasing resistance t0.the movement of the door and preventing any' damage or strain to the door or the hinge in case it is pushed` beyond the normal stopping point.

In Fig. 12 a modified forni of cani plate 24`is shown, the 'pins mounted on the disk having anti-friction rollers 25 thereon, and the edge of the cani plate around the opening being modiied to suit the changedform The principle and mode of operation, however, is the same as thatV of the device described.

A yoke 27 has outwardly turned lugs 27 formed thereon projecting into holes in the top and bottom of the box and forming pivots on which the lyoke has a limited horizontal movement with the cam plate.. The

end of the yoke. has a `hole to receive the shank 260in the cam plate and the plate 28 1 is slidable on said shank and has .guides 29 which hold the plate andthe spring in position within the yoke. The pivots 27 allowthe yoke and spring to oscillateand follow the movement of the cam plate, as indicated in Fig. 14. This construction diifers from that heretofore described in that the late through which the .threaded stud o the former construction passes, is rigid, and the spring itselfl is fleied to follow the movement of the cam plate. The lock nuton the threaded end of the stud 26 corresponds to the one described, and the tension .of the spring may be regulated by the adjustment. of this nut. u

. The operation of the mechanism illustrated in Fig. 12 is the saine as that of the construction first described. The door when opened` will be swung back to a position substantially at right angles to its closed position and when the cani plate has been moved slightly past the center, the pins or studs will enter the recesses inthe late and the door will be held in that position without the use of any fasteningmeans and will yield against the tension of the spring if the door is pushed still farther open.

If it is desired to close the door the operator may push it open a little further, and upon releasingit the door will swing eny tirely shut.

In devices of this kind as usually made the hinges would not stop inan open u ositionwithout the use of wedges or some orm of stop. Those that do remainopen when the r hinge has been swung ast the center ofthe door pivot, will notv c ose themselves after being swung past the normal stopping point.

I-Ience I regard this feature of my invention as a valuable im rovement over devices o this kind as usua ly made.

, The various. details of construction may bev inodiiied without-departing from th'e spirit of my invention.

I claim as my invention:

l. A double acting spring 'hinge having where said holding means is operative, and released. v

pushed farther open, or beyond the point..

2.,.A double acting swing doorin eombination, with a spring hingetherefor, said hinge including means for holding said door to prevent it from closing when swung open past a predetermined point, and a spring device perinitting the further opening o the door, but yieldingly resisting such lmovement, for the purpose specified.

3. A double actin swing door in combination with a doub e acting spring hinge, said hinge comprising stationary pins-and a plate havin canied es arranged to engage said pinsan travel t ereon, and said plate having recesses in its opposite sides to receive said pins when the door is swung to an -open position, the walls'of said recesses engaging said pins and holding the door in itsopenfposition, and a spring attached to said plate and arranged to be put under .tension bv the movement of the door, substantially as described.

' 4. The combination, with a double 'swingy termined point in its open position, said plate swinging on one of said pins as a pivot open position, and the axisv of said plate from the closed posit-ion of the door to its being transferred from one pin to Athe other, MARCUS ERICKSON and the' resistance of said spring lncreasing Witnesses: thereon when the door is pushed beyond its RICHARD PAUL, normal open poslton. Y J. B. BYINGTON 

